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Class D Switching Power Amplifiers and Power D/A conversion

SI   PCB faux pas?
SI   PCB faux pas?
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Old 16th April 2005, 04:53 PM   #21
MEXXX is offline MEXXX  United States
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So does anyone know the thermal conductivity of silicon? The little heat sink I added on the top of my SI's gets fairly warm, so its obviously dissipating heat from the top side of the chip.

MEXXX
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Old 16th April 2005, 08:24 PM   #22
TriodeGuy is offline TriodeGuy  United States
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What you have to remember is that in the original case the chip is mounted upside down. I'd be willing to bet that this is why they chose to add the solder slug rather than mounting a conventional heatsink on the top. Upside down such a heatsink does little good since hot air rises. Just my .02.
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